On 25 May 2026 Sweden added a new energy class, A0, to its building energy‑performance rating system. The move also introduces a temporary definition of a zero‑emission building, in line with the European Union’s Building Energy Performance Directive (EPBD), which sets a target of zero‑emission buildings across the Union by 2050. The change is being rolled out in two stages; the new class must be in place before the directive’s implementation date of 29 May, with further rule changes planned later in 2026 that will modify the definition and requirements for A0 buildings. Under the updated regulations, energy‑declaration experts must assess whether a building meets zero‑emission criteria and can therefore be assigned class A0. The declaration summary will now include the A0 rating. The amendments are recorded in BFS 2026:2, an update to the energy‑declaration regulations issued by Boverket.
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